LevelSequenceActor transform offset for Sequencer lost on value changed

Toggling Lock, Pin, Ignore on subsequences or adding new transform key on a character inside a subsequence the Actors lose the LevelSequenceActor transform offset they have at preview and go back to world origin, playback is based on the origin instead of LevelSequenceActor after this.

If I scrub back to frame -1 and move to a frame > 0 the playback is correct again, relative to LevelSequenceActor.

Steps to Reproduce

I've got a LevelSequence with:

• MasterSequence

• Characters

• Area1
• Area2

Toggling Lock, Pin, Ignore on "Characters", "Area1" or "Area2" subsequences or adding new transform key on a character inside "Area1".

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This is not a 100% repro, I'm not sure what are the exact reasons this is happening as it's not reproducible in all LevelSequences.